Open-weight music models
2 in the catalogue today, and the list grows as the market does. Every one with what it costs, who sells it and where it stands.
Models that compose and render music from a description. They are priced per generation or per second of audio rather than per token. The question that decides whether you can use one commercially is not the price but the terms: makers differ sharply on who owns the output and whether it may be sold, and that is on the maker's page, not in the rate card.
Weights published under a licence that lets you run them where you like and sell what you build — Apache 2.0, MIT and their kin impose little beyond keeping the notice. This is the list to start from if you need the model on your own hardware, in your own region, or simply want no third party between you and it. The trade is that hosting is now your problem, and the prices shown beside each one are what somebody else charges to do it for you.